Single-trigger shotgun.



E. H. HAMBRSLY.

SINGLE TRIGGER SHOTGUN.

APPLICATION FILED JUNE 16, 1911.

1,018,759. Patented Feb. 27, 1912.

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EDWARD H. HAMER-SLY, OF RICHMOND, VIRGINIA.

SINGLE-TRIGGER Sl-IOTGUN.

Specification of Letters Patent.

Patented Feb. 27,1912.

Application filed June 18, 1911. Serial No. 633,523.

nism is provided for releasing the hammers successlvely by the operationof a single trigger.

The primary object of my invention is to provide a firing mechanism ofthis particular class which shall be simple in construction, positive inoperation, durable in use,

and not liable to get out of order.

A further object of my'invention is to provide a single triggermechanism for double-barrel guns in which elther hammer may be releasedfirst by simply advancing or retracting one of the tripping-dogs priorto the operation of the trigger.

Other objects and advantages of the in vention will hereinafter appear,and what I claim as new in the art is specifically set forth in theappended claims.

In the accompanying drawings, forming a part of this specification:Figure' 1 is a plan view of a single-trigger firing mechanismconstructed in accordance with my invention. Fig. 2 is a side elevationof the mechanism, the near side of the lock-casing being broken away.Fig. 3 is a rear end view. Fig. 4 is a detail view of parts hereinafterreferred to.

Like numerals of reference indicate like parts in all the figures of thedrawings.

In the drawings I have shown only so much of the firing mechanism of adoublebarrel gun as to show the construction and operation of myimproved single-trigger mechanism.

In the present instance the two hammers, 5, 5, are independently mountedon a pintle 6 bearing in the sides of the lock-casing 7, and are spacedapart by means of a flanged collar 8, said hammers being actuated byspring wires 9, 9, which are coiled around the collar atopposite sidesof the flange so that the terminals of the wires may bear upon theforwardly-projecting portions 5 of the hammers, with which thecookinglevers engage, as will be understood. Each hammer is providedwith a notch or shoulder 10, with which its companion sear orlocking-dog 11 engages, and in advance of this notch or shoulder thehammer is provided with a cam surface, as 12, which cooperates with theengaging end of the locking-dog or sear to lift the rear end thereofwhen the hammer is released and operated by the spring. The sears orlocking-dogs 11 are mounted on a transverse pintle 14, and are disposedin proper position with respect to the hammers, for positive engagementtherewith, by means of a flanged spacing collar 13, the spring wires 9being ex tended and coiled around the spacing col lar so that the rearterminals 9 of said wires will bear upon the sears or looking dogs tocause their engagement with the hammers. In the present instance thesesears or looking dogs are released by independent tripping-levers 15 and16, which engage the inwardly bent ends 11 of said sears, thetripping-lever 15 being mounted on a fixed pintle 17 and thetripping-lever 16 on a slidable pintle 18, supported in a slide 24, andprojecting into a slot 7 in the lock-casing, whereby said tripping-lever16 may be shifted longitudinally, for the purpose hereinafter explained.The trip ping-levers 15 and 16 project upwardly at their rear or freeends, and each terminates in a catch, 15, 16 respectively, with which isadapted to engage a spring-actuated pawl 19 pivoted at the rear end ofthe trigger blade 20, said pawl being pivoted between ears 20 on thetrigger-blade and actuated to engage the trippinglevers by means of asmall helical spring 21 seated in a recess in the trigger-blade andbearing against the tail-end 19 of the pawl. The trigger-blade ispivoted on the inner end of the fixed supporting pintle 17, and isreturned to its normal position by a helical spring 22 en gaging atail-end 20 of said trigger-blade.

In order that the tripping-levers 15 and 16 may be operated by thetrigger one at a time the catch-ends of said levers are disposed one inadvance of the other, as shown in Fig. 2, and to hold each leverelevated after operation helical springs 23 are interposed between saidlevers and the bottom of the lock-casing, but it will be understood, ofcourse, that these holding springs 23 are not strong enough tocounteract the force of the As heretofore stated, the tripping-lever 16is mounted on a slidable pintle 18, and for the purpose of moving saidpintle to shift the lever it is provided with a slide 24, hav ing aheaded operating-pin 25 which pro j ects through a slot 7 in thelock-casing, the slide and lever being spaced apart by a collar 26.

In the operation of the firing-mechanism hereinbefore described, withthe trippinglever 16 shifted to the left, as shown in Fig. 2, the pawl19 of the trigger will be in engagement with the tripping-lever 15, andthe catch-end of the shiftable tripping-lever 16 will be in front of andout of the path of the pawl as it moves upward with said lever 15 on theoperation of the trigger. When the trigger is operated it lifts thelever 15, which rocks the companion sear 11 and releases thecorresponding hammer 5, and as the trigger-blade returns to its normalposition the tripping-lever 15 will remain elevated by reason of itsspring 23, and pawl 19 will ride over the catch-end of tripping lever 16to a position below said catch-end for engagement therewith when thetrigger is again operated. The hammer controlled by the tripping-lever15 will therefore be operated first. Now when it is desired to firstoperate the hammer controlled by the tripping-lever 16 it is necessaryonly to shift said tripping-lever to the right, by pressure on theheaded pin 25, so that the catch-end of said lever will be located inadvance of the catch-end of lever 15. As will be seen, therefore, eitherbarrel of the gun may be fired first, according to the position to whichthe tripping-lever 16 has been shifted; and of course the catch-end oflever 16 may be shifted on a line with the catch-end of lever 15, sothat both barrels may be fired at the same time, if desired. The upperedge of the trigger-blade 20 is provided with a fiat surface 20, (Fig.2,) for the engagement of the usual safety device therewith, as will beobvious.

Having thus described my invention, what I claim as new and desire tosecure by Letters-Patent, is

1. In a single-trigger mechanism for firearms, the combination with thehammers, of means for releasing the hammers including tripping-levershaving integral catch-ends, a shiftable fulcrum for one of said levers,a trigger-blade, and a pawl on the triggerblade for engaging the catchends of the tripping-levers, substantially as shown and for the purposeset forth.

2. In a single-trigger mechanism for firearms, the combination with thehammers, of means'for releasing the hammers including tripping-levershaving integral catch-ends, a shiftable fulcrum for one of thetrippinglevers, a trigger-blade located between the tripping-levers, anda spring-actuated pawl carried by the trigger-blade and extendedlaterally to engage the catch-ends of both tripping-levers,substantially as shown and for the purpose set forth.

3. In a single-trigger mechanism for firearms, the combination with thehammers, of means for releasing the hammers including tripping-levershaving integral catchends, a shiftable fulcrum for one of thetrippinglevers, and an operating slide connected to the shiftablefulcrum; together with a trigger-blade, and a spring-actuated pawl onthe trigger-blade for engagement with the catch-ends of thetripping-levers, substan tially as shown and for the purpose set forth.

4:. In a single-trigger mechanism for firearms, the combination with thehammers and means for operating the same, of a tripping-lever for one ofthe hammers pivoted on a fixed fulcrum and having a catch-end, a secondtripping-lever, for the other hammer, having a catch-end, a movablefulcrum for the second tripping-lever, and means for moving said fulcrumto dispose the catchend of the lever in front of or behind the catch-endof the other lever; together with a trigger-blade, and a spring-actuatedpawl carried by the trigger-blade to engage the catch-ends of thetripping-levers one after the other, substantially as shown anddescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

EDWARD H. HAMER SLY.

Witnesses:

JNO. GARLAND PoLLARD, BENJAMIN T. BLAOKWELL.

Copies of this patent may be obtained. for five cents each, byaddressing the Commissioner of Patents,

Washington, D. C.

